cig_logo.png

SPECFEM3D GEOTECH version:1.2.0 date:: 2017-06-27

10.5281/zenodo.820154

SPECFEM3D_GEOTECH_V1.2.0.tar.gz [2017-06-27]

Primary Developers

Hom Nath Gharti
Princeton University
Dimitri Komatitsch
CNRS, Marseille
Jeroen Tromp
Princeton University

Description

SPECFEM3D_GEOTECH is an open-source command-driven software for 3D slope stability analysis and simulation of 3D multistage excavation based on the spectral-element method.

SPECFEM3D_GEOTECH is a free and open-source command-driven software for 3D slope stability analysis (for more details see Gharti et al., 2012a) and simulation of 3D multistage excavation (for more details see Gharti et al., 2012b) based on the spectral-element method (e.g., Patera, 1984; Canuto et al., 1988; Seriani, 1994; Faccioli et al., 1997; Komatitsch and Vilotte, 1998; Komatitsch and Tromp, 1999; Peter et al., 2011). The slope stability and the excavation routines were originally started from the routines found in the book "Programming the finite element method" (Smith and Griffiths, 2004). The software can run on a single processor as well as multi-core machines or large clusters. It is written mainly in FORTRAN 90 and parallelized using MPI (Gropp et al., 1994; Pacheco, 1997) based on domain decomposition, the open-source graph partitioning library SCOTCH (Pellegrini and Roman, 1996) is used. The element-by-element preconditioned conjugate-gradient method (e.g., Hughes et al., 1983; Law, 1986; King and Sonnad, 1987; Barragy and Carey, 1988) is implemented to solve the linear equations. For elastoplastic failure, a Mohr-coulomb failure criterion is used with a viscoplastic strain method (Zienkiewicz and Cormeau, 1974).

This program does not automatically determine the factor of safety of slope stability. Simulations can be performed for a series of safety factors. After plotting the safety factor versus maximum displacement curve, one can determine the factor of safety of the given slope. Although the software is optimized for slope stability analysis and multistage excavation, other relevant simulations of quasistatic problems in solid (geo)mechanics can also be performed with this software.

The software currently does not include an inbuilt mesher. Existing tools, such as Gmsh (Geuzaine and Remacle, 2009), CUBIT (CUBIT, 2011), TrueGrid (Rainsberger, 2006), etc., can be used for hexahedral meshing, and the resulting mesh file can be converted to the input files required by SPECFEM3D_GEOTECH. Output data can be visualized and processed using the open-source visualization application ParaView.

Cite as

Gharti, H.N.; Komatitsch, D.; Langer, L.; Martin, R.; Oye, V.; Tromp, J.; Vaaland, U.; Yan, Z. (2017), SPECFEM 3D Geotech: an open-source, parallel and cross-platform geotechnical engineering application, Available from: geodynamics.org, doi: 10.5281/zenodo.820154, url: https://doi.org/10.5281/zenodo.820154

Primary References

Gharti, H.N.; Komatitsch, D.; Oye, V.; Martin, R.; Tromp, J. (2012a), Application of an elastoplastic spectral-element method to 3D slope stability analysis, International Journal for Numerical Methods in Engineering, 91 (1) , 1-26, doi: 10.1002/nme.3374, url: http://doi.wiley.com/10.1002/nme.3374

Gharti, H.N.; Oye, V.; Komatitsch, D.; Tromp, J. (2012b), Simulation of multistage excavation based on a 3D spectral-element method, Computers & Structures, 100-101, 54-69, doi: 10.1016/j.compstruc.2012.03.005, url: http://linkinghub.elsevier.com/retrieve/pii/S0045794912000727

Metadata

Primary Developer
Hom Nath Gharti
Primary Developer
Dimitri Komatitsch
Primary Developer
Jeroen Tromp
Contributor Developer
Leah Langer
Contributor Developer
Roland Martin
Contributor Developer
Volker Oye
Contributor Developer
Uno Vaaland
Contributor Developer
Zhenzhen Yan
Primary Manual
Hom Nath Gharti
Primary Manual
Dimitri Komatitsch
Primary Manual
Jeroen Tromp
Contributor Manual
Leah Langer
Contributor Manual
Roland Martin
Contributor Manual
Volker Oye
Contributor Manual
Zhenzhen Yan
Version
1.2.0
License
GPL3
Other Acknowledgement
This work was funded in part by the Research Council of Norway, and supported by industry partners BP, Statoil, and Total.

If you see errors or have further questions, please email help@geodynamics.org

Sign In